Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 563 [Rate centres in NPA 563] [Dial plan for NPA 563]

NXX: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
563-227 A Dubuque IA DVNPIAEA8MD  751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-227 0 Dubuque IA   073H TELNYX LLC 634   2020-05-28   
563-227 1 Dubuque IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2018-08-05   
563-227 2 Dubuque IA   5562 METROPCS, INC. 634   2018-08-06   
563-227 3 Dubuque IA   221F ONVOY, LLC - IA 634   2019-09-19   
563-227 4 Dubuque IA   221F ONVOY, LLC - IA 634   2019-06-20   
563-227 5 Dubuque IA   221F ONVOY, LLC - IA 634   2019-06-20   
563-227 6 Dubuque IA   8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 634   2019-05-13   
563-227 7 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2019-04-04   
563-227 8 Dubuque IA   221F ONVOY, LLC - IA 634   2019-09-19   
563-227 9 Dubuque IA   221F ONVOY, LLC - IA 634   2019-09-19   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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